Sealing attachment.



No; 7U4,493. I Patented .lu|y,l5, [902.

' C. C. ARMSTRONG.

SEALING ATTACHMENT.

(Applicaltion filed Mar. 5, 1901.)

2 Sheets$heet' I.

(No Medal.)

BY A v ATTORNEY.

m: mums PETER cd. Pnorafimu, WASHINGTON D, c.

No. 704,493. Patented luly l5, I902.

' C. C. ARMSTRONG.

SEALING ATTACHMENT.

(Application filed. Mar. 5, 1901.)

2 Sheats-Sheet 2.

(Ilu Model.)

WITNESSES: INVENTOR ATTORNEY;

| P as cu. PNOTO-LITMQ, wasumamn. 0.1:

man STATES PATENT ()FFICE.

CHARLES CARROLL ARMSTRONG, OF COLUMBUS, OHIO.

SEALING ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 704,493, dated July 15,1902. Application filed March 5, 1901. Serial No. 49,813. (No model.)

To aZZ whom it may concern.-

Be it known that I, CHARLES CARROLL ARMSTRONG, a citizen of the UnitedStates, residing at Columbus, in the county of Franklin and State ofOhio, have invented certain new and useful Improvements in SealingAttachments; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the accompanying drawings, and to the letters ofreference marked thereon, which form a part of this specification.

My invention relates to a sealing attachment for acetylene-gaslamps,&o., or, otherwise expressed, means for hermetically closing ofjoints, and my improved attachment is susceptible of being applied toVarious receptacles; but in the instance here illus trated and describedI have shown its practical application in connection with anacetylene-gas lamp when used in sealing the joint to the gas-chamber ofthe generator and for which purpose it is especially adapted, thus doingaway with the ordinary screw-threads as a method of making a gas jointor seal, which is very objectionable for the reason that the chemicalaction of calcium carbid is such that the threads soon become corrodedwith a sticky slimy substance which when cool sets and becomes hard,thereby frequently preventing the removal of the cover of thegas-chamber and the separation of the parts, even when the strength of aman is exerted upon it; but my improved sealing attachment obviates theabove defects, and at the same time it provides a more perfect seal thanby the old method in which in screwing a cover or lid down suflicientlytight to make a seal the gasket or packing between the joints has atendency to pucker, thus nocessitating a strong pressure and making itvery difficult to unscrew, as the rubber gasket while thus puckeredbecomes set to the parts caused by said chemical action. My improvement,however, overcomes this defect, as the pressure is directly downward,there being no movement of the lid on the rubber gasket, the seal beingmade by the hooked arms engaging the flanges on the lockingring, thebeads or flanges being on an incline,

so as to be much deeper or wider on one side, so that by giving ahalf-turn to the genera tor or locking-ring will cause the arms to moveup said incline, thereby causing the direct downward pressure, ashereinbefore re ferred to. It will thus-be seen that a greater pressureis obtained and with less friction by my improvement than by the oldmethod of screw-threads, while at the same time providing an efficientmeans for attaching the generator to the lamp*body.

My invention consists in certain novel and peculiar features or"construction and arrangement, as will be fully described hereinafter andpointed out in the subjoined claims, in accordance with the statutes insuch cases made and provided therefor.

In the accompanying drawings, illustrating the practical applicationofmyinvention,Figure 1 is a side elevation of an acetylene-gas lampprovided with my improved sealing attachment. Fig. 2 is a plan view ofthe lower or under side of the locking-ring, so as to show the inclinedlocking-flanges and spaces or recesses between each for the hooked arms.Fig. 3 is a plan view of the top or upper side of the locking ring, soas to show the inclined locking-flanges and spaces or recesses betweeneach for the hooked arms. Fig. 4 is a detail View in perspective oflaportion of the locking-ring having. one end in cross-section, so as toshow the exact contour or outline of its form and taken on the line soa: of Fig. Fig. 5 is a plan View, looking on the top, of the cover orlid which rests over the carbidchamber of the gas-generator, showing therecesses or cuts which pass over and rest in position around each of thehooked arms. Fig. 6 is a plan view of the'top of the gasgenerator withcover or lid removed, so as to show the position of the hooked arms.Fig. 7 is a plan view of the gasket or packing-ring. Fig. 8 is a planview of the chimney position with its neck in cross-section and with itstop portion and the lamp-body removed, so as to show the annular bead atits base which is held in position under the locking-ring; and Fig. 9 isa sectional view of a portion of the outer shell or casing of thegenerator and the base of the chimney, both being broken away,

so as to show in section the locking-ring and also one of the hookedarms.

Referring in detail to the various parts of my improved sealingattachment by means of the letters of reference, a designates the hookedarms, consisting of a suflicient number as desired, which are formed onthe top of the gas-generator and are adapted to fit in and over recessesb of cover or lid 0, thus holding said cover, which fits on the top ofthe gasgenerator, in position and also acts as bearings for the inclinedflanges d of locking-ring c, said flanges or beads being thicker ordeeper at one end and gradually inclining 01*!tapering toward the other,as clearly shown in Fig. 1, and being of an equal number to the hookedarms a, so that each of said flanges will always rest or bear againsteach of said hooked arms when the parts are all together and thelocking-ring is in operative position, and by turning said locking-ringso that the inclina tion of the flanges is pressed forward orbackward-t. e., to the left or the rightthrough the hooked arms the ringis tightened or locked and the joint then sealed or the ring is loosenedor unlocked and the joint is unsealed or broken. Locking-ring e isprovided with recesses j, which are formed by the spaces left betweenthe inclined flanges, (see Figs. 2 and 3,) which permit of the ringbeing passed over the bent top or hooked end of arms a when adjusted inposition or when it is desired to entirely remove said lockingring fromthe lamp after the chimney-top and lamp-body have been removed for thispurpose. The locking or sliding ring 6 is further provided with a handleor finger-hold g, by which it may be operated. The top of j thegenerator is preferably formed with an annular beading h, (see dottedlines, Fig. 6, and solid lines, Fig. 9,) over which is placed the rubbergasket t and on which rests the rim 7c of cover 0, (see Fig. 9,) so thatwhen all the parts, including said locking-ring, are in position bysimply moving or turning the locking-ring e, by placing the finger inthe handle g toward the left, inclined flanges d, on account of theirincreased width or depth, as they pass or move through the hooked arms awill increase the binding tension, thus pressing the rim 7c of the covertightly but firmlydown upon the gasket t', which by reason of theannular beading It will insure a perfectly gas and air tight joint, andat the same time the chimney will be held firmly in position by reasonof its head looming in contact or engagement with the annular groove orconcavity m of the locking-ring e.

Myimproved attachment not alone affords a secure and simple means forperfectly sealing joints of various receptacles, but also makes a securemeans for firmly connecting various parts of a device, and when used ona lamp constructed with an oil font or reservoir similar to the oneshown in Patent No. 614,315, granted to me under date of November 15,1898, it prevents any rattle or noise caused by a jar and so common inthis and all lamps of ordinary construction.

It will of course be understood that I do not limit myself to the exactform of construction herein shown and described, as my sealingattachment is susceptible .of slight modifications and alterations, aswill suggest them selves to any mechanic, according to the device towhich it is-to be attached, without departing from the spirit orprinciples of my invention. As, for instance, if so desired the lookingor sliding ring can be entirely dispensed with by forming the base ofthe chimney of sufficient size and provided with the proper number ofinclined flanges as there are hooked arms, also with the spaces leftbetween of proper size so as to form the recesses to receive the hookedarms, substantially the same as the locking-ring, thus making saidchimney answer the same purpose.

Having now described my sealing attachment, what I claim as new and asmy invention is 1. In a sealing attachment for acetylene lamps, thecombination with the gas-generator, of the gasket composed of suitablematerial; a cover or lid the flange or rim of which rests firmly butdetachably on said gasket; a chimney-base, the head of which fits on therim of said cover; a locking-ring provided with flanges; said flangesbeing adapted to operate in conjunction with suitably-arranged hookedarms attached to said gas-generator, so as to tighten or loosen theparts, thereby opening or hermetically closing said joint, substantiallyas described.

2. The combination in an acetylene gas lamp with the generator, saidgenerator being provided with means for securely connecting the parts,and formed with an annular beading; of a suitable gasket or packing; acover or lid provided with a rim; a chimney the base of which isprovided with a bead adapted to rest on said rim; a locking-ring adaptedto rest over and on the head of said chimney, said lockin g-rin g beingprovided with flanges, and recesses, so that said ring is adapted inconjunction with the securing-arms of said generator, to operate inopening or hermetically closing or opening the joint of thegasgenerator, substantially as described.

In testimony whereof I have affixed my signature in presence of twowitnesses.

7 CHARLES CAR-ROLL ARMSTRONG.

Witnesses:

V. W. .ToNEs, MARY L. ARMSTRONG.

